US PATENT SUBCLASS 530 / 501
.~ Aldehyde, ketone or ozone reacted with a lignin or lignin containing substance, or product thereof

Current as of: June, 1999
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530 /   HD   CHEMISTRY: NATURAL RESINS OR DERIVATIVES; PEPTIDES OR PROTEINS; LIGNINS OR REACTION PRODUCTS THEREOF

500  DF  LIGNINS OR DERIVATIVES {7}
501.~ Aldehyde, ketone or ozone reacted with a lignin or lignin containing substance, or product thereof

DEFINITION

Classification: 530/501

(under subclass 500) Processes wherein a lignin or a lignin-containing substance is reacted with an aldehyde, with a ketone, or with ozone, or the reaction products thereof.

(1) Note. See this Class, subclass 507 for processes wherein acetone, for example, is used as a solvent rather than as a reactant.